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    <b>这是b标签加粗的效果</b>
    <strong>这是strong标签加粗的效果</strong><br>
    <u>这是u标签下划线的效果</u>
    <ins>这是ins标签下划线的效果</ins><br>
    <i>这是i倾斜标签的效果</i>
    <em>这是em倾斜标签的效果</em><br>
    <s>这是s删除线的效果</s>
    <del>这是del删除线的效果</del>
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